The simple "log on error" approach to errors in connector query needs to be enahnced.

[gsaluja9]

This is especially important when transaction size is big, and multiple threads are at place.
The log as a post mortem export tool seems to be inefficient.

Evaluate some other approaches.

[luisremis]

+1 on this.

Maybe we can start by adding error handling on certain situations that we know we need to stop the loader. ApertureDB connection dropping is what comes to mind. When this happens, the loading usually does not recover, and we get a ton of logs messages saying the same thing ("ApertureDB disconnected").